期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：189
期号：3
页码：032026
DOI：10.1088/1755-1315/189/3/032026
语种：English
出版社：IOP Publishing
摘要：In the distributed optical fiber monitoring system, the Brillouin system is a system with the most difficult integration, the weakest signal and the most widely used range. It can monitor the strain and temperature of single fiber cable at the same time, and the monitoring range can exceed 100km. It is widely used in super engineering such as submarine optical cable, submarine tunnel, oil pipeline and so on. It is of great research value since this system can monitor the physical quantity of micro deformation, crack and temperature in real time. After the Brillouin system is built independently, the high precision extraction of Brillouin spectrum is realized by using the high efficiency denoising ability of wavelet. By studying the algorithm, the system can reach the temperature identification accuracy of ± 1 degrees centigrade, and the accuracy of strain reaches ± 20 με.
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